How Traffic Lights Work

What was your internet obsession this year? Karah is joined by writer and podcast host, Aminatou Sow, to talk about what they watched — and what rotted their brains — in 2025. They talk about niche internet obsessions, vertical shorts, AI depicting the oldest generation, and the ...  Show more

Are you a gift go-getter, or a holiday procrastinator? This week, Karah spoke with Kyle Chayka, tech writer for The New Yorker and author of the book “Filterworld: How Algorithms Flattened Culture”. They talk about his gadget gift guide, how analog products are back in style, and ...  Show more

What if traffic lights could adjust for the actual flow of traffic happening at any given moment? Learn how smart, networked technology could help drivers (and pedestrians) in this episode of BrainStuff, based on this article: https://science.howstuffworks.com/engineering/civil/s ...  Show more

Traffic lights detect vehicles using a variety of methods. Check out this podcast from HowStuffWorks.com to find out how timers, inductive loops and other detectors keep traffic running smoothly.

The history of traffic signals is way more interesting than you might think. Trust us. 

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The rules vary from state to state, but there are specific guidelines for what services can and can't get a mention on U.S. highway signs. Learn more in this episode of BrainStuff, based on this article: https://auto.howstuffworks.com/tech-transport/who-featured-blue-highway-exit ...  Show more